Abstract
The objective of this study is to investigate the air-side heat transfer characteristics of a spirally-coiled circular fintube heat exchanger for various geometric parameters under non-frosting conditions. The heat transfer characteristics of the heat exchanger were analyzed with respect to heat exchanger geometries, and then, the characteristics were compared with those of rectangular-plate fin-tube heat exchangers with discrete fins. The heat transfer coefficient increased with a decrease in the number of tube rows and an increase in the fin pitch. The optimum length of the L-foot was 2.7 mm. In addition, the heat transfer rate increased with a decrease in the tube pitch and the tube thickness. The heat transfer coefficient of the spirallycoiled circular fin-tube heat exchanger was 24.3% higher than that of the rectangular-plate fin-tube heat exchanger.
| Original language | English |
|---|---|
| Pages (from-to) | 515-522 |
| Number of pages | 8 |
| Journal | Transactions of the Korean Society of Mechanical Engineers, B |
| Volume | 34 |
| Issue number | 5 |
| DOIs | |
| Publication status | Published - 2010 May 1 |
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Keywords
- Heat exchanger
- Heat transfer
- Refrigerator
- Spirally-coiled circular fin-tube
ASJC Scopus subject areas
- Mechanical Engineering